IWARA2026 - 12th International Workshop on Astronomy and Relativistic Astrophysics

Relativistic Bondi–Hoyle–Lyttelton Accretion with Realistic Equations of State in HUASTECO code.

Not scheduled

20m

Auditorio José Adem, Mexico

Talk

Speaker

Rodrigo Anaya (Instituto de Astronomía, Universidad Nacional Autónoma de México)

Description

Title: Relativistic Accretion with a Realistic Equation of State using HUASTECO code.

Abstract: We present relativistic Bondi--Hoyle--Lyttleton accretion with realistic equations of state using the HUASTECO code. The system consists of a black hole moving supersonically
through a gaseous medium, forming an accretion shock cone. The main goal is to study more realistic accretion scenarios in which the adiabatic index is not constant, but depends
on the thermodynamic regime of the gas. In particular, we investigate how different temperature regimes affect the accretion dynamics.

We implement a temperature-dependent relativistic equation of state by reformulating the conservative-to-primitive recovery in terms of the dimensionless temperature.
The implementation is validated through root-finding, thermodynamic, and accretion diagnostics. Our results show that realistic equations of state modify the thermal structure,
Mach-number distribution, shock morphology, and mass accretion rate of relativistic flows.